.jumbotron {
  padding-top: 6rem;
  background-color: #e2edff;
}

#projects {
  padding-top: 2rem;
  background-color: #e2edff;
}

section {
  padding-top: 6rem;
}

.gallery-img {
  width: 100%;
}

#gallery .row > * {
  padding: 0;
}

/* My certis Section */
.certi-box {
  position: relative;
  background-color: #0c6efd;
  border-radius: 10px;
  height: 500px;
  transform-style: preserve-3d;
}

.certi-box::before {
  content: "MY";
  position: absolute;
  color: #fff;
  font-size: 6em;
  font-weight: bold;
  font-style: italic;
  top: 30px;
  left: 50%;
  transform: translate(-50%, 0);
  opacity: 0;
  transition: 0.5s;
}

.certi-box:hover::before {
  left: 50%;
  transform: translate(-50%, 0);
  opacity: 0.2;
}

.certi-box::after {
  content: "certi";
  position: absolute;
  color: #fff;
  font-size: 4.3em;
  font-weight: bold;
  font-style: italic;
  top: 350px;
  left: 50%;
  transform: translate(-50%, 0);
  opacity: 0;
  transition: 0.5s;
}

.certi-box:hover::after {
  left: 50%;
  transform: translate(-50%, 0);
  opacity: 0.2;
}

.certi-name {
  position: absolute;
  top: 0;
  width: 100%;
  color: #fff;
  text-align: center;
  font-size: 2em;
  opacity: 0;
  transform: translate3d(0, 0, 50px);
  transition: 0.5s;
}

.certi-box:hover .certi-name {
  top: 20px;
  opacity: 1;
}

.certi-detail-btn {
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translate(-50%, 0);
  opacity: 0;
  transition: 0.5s;
}

.certi-box:hover .certi-detail-btn {
  bottom: 20px;
  opacity: 1;
}

.certi-img {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate3d(-50%, -50%, 100px);
  max-width: 350px;
  transition: 0.5s;
  z-index: 10;
}

.certi-box:hover .certi-img {
  transform: translate3d(-50%, -52%, 100px) scale(1.2);
}

/* Overlay */
.overlay {
  width: 0;
  height: 0;
  overflow: hidden;
  position: fixed;
  top: 0;
  left: 0;
  background-color: rgba(0, 0, 0, 0);
  z-index: 9999;
  transition: 0.8s;
  text-align: center;
  padding: 100px 0;
}

.overlay:target {
  width: auto;
  height: auto;
  bottom: 0;
  right: 0;
  background-color: rgba(0, 0, 0, 0.7);
}

.overlay img {
  max-height: 100%;
  box-shadow: 2px 2px 7px rgba(0, 0, 0, 0.5);
}

.overlay:target img {
  animation: zoomDanFade 1s;
}

.overlay .close {
  position: absolute;
  top: 50px;
  left: 50%;
  margin-left: -20px;
  color: white;
  text-decoration: none;
  background-color: black;
  border: 1px solid white;
  line-height: 20px;
  padding: 5px;
  opacity: 0;
}

.overlay:target .close {
  animation: slideDownFade 0.5s 0.5s forwards;
}

.overlay:target .next,
.overlay:target .prev {
  animation: fadeAjah 0.5s 0.5s forwards;
}

/* navigasi */
.next,
.prev {
  width: 50px;
  height: 82px;
  background-image: url(img/next.png);
  position: absolute;
  text-indent: -9999px;
  top: 40%;
  margin-left: 50px;
  opacity: 0;
}

.prev {
  background-image: url(img/prev.png);
  margin-left: -100px;
}

/* animasi */

@keyframes fadeAjah {
  0% {
    opacity: 0;
  }

  100% {
    opacity: 1;
  }
}

@keyframes zoomDanFade {
  0% {
    transform: scale(0);
    opacity: 0;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

@keyframes slideDownFade {
  0% {
    opacity: 0;
    margin-top: -20px;
  }

  100% {
    opacity: 1;
    margin-top: 0;
  }
}